Settlement will end investigations by 43 states and District of Columbia

Barclays PLC agreed to pay $100 million to end investigations by 43 states and the District of Columbia into its alleged manipulation of the London interbank offered rate benchmark in the mid-2000s, authorities said on Monday.

The settlement comes four years after the British bank resolved similar charges with U.S. and U.K. authorities that had ignited a firestorm and led to the resignation of its top leadership. Attorneys general...